Pneumatic vehicle-wheel.



L. MAYOLINO. PNEUMATIC VEHICLE WHEEL. APPLICATION FILED MAR. 25, |916.

Patented Feb. 6, 1917.

2 SHEETS-SHEET 2' A TTORNEY @A'ra amen.

LUIS MAYOLINO, OF HABANA, CUBA, ASSIGNOB '.lO RUEDAS Y NEUMATICOSMAYOLINO,

" OF HABANA, CUBA, A CORPORATION OF CUBA. v

' lPNEUMairie VEHICLE-WHEEL.

To all whom t may concern:

Be it known that I, LUIS citizen of the United States, and a resident ofHabana, Cuba, have invented certain new vand useful Improvements inPneumatic Vehicle-Wheels, of which the following is a specification.

This invention relates to a vehicle wheel of the class in which the airtube is not applied to thev rim of. the wheel within the shoe, but isplaced at a distance from said' rim, and laidaround the hub, so thatWhile the cushioning eiect of the air tube is retained, -lthe tube isprotected against punctures, and its life is greatly prolonged.

The invention comprises novel and eili- 'cient means for-transmittingthe movement of the hub: to the wheel rim, when the tube is inflated ordeflated and also,"means for locking the rim to the hub during thedeflated condition of the tube.

The invention further comprises various other features of constructionmore'fully pointed out in the specification and -appended claims.

In `the accompanying drawings: Figure 1 is a side view of a vehiclewheel embodying lmy invention with the detachable face plate removed andshowing the air tube inflated; Fig. 2, a similar view with the air tubede5 Hated; Fig. 3, an enlarged section onl line 3-3 Fig. l; Fig. 4, anenlarged sectionon line 4-4 Fig. 1; Fig. 5; a front view of the faceplate carrying the hub, and Fig. 6, a diagram of portions of the rim andhub with the air tube omitted. 1

The wheel comprises essentially, an i'nv ner section that includes thehub, an outer section that includes the rim, and an inter'- posediniiation tube by means of which motion is transmitted from the hub tothe rim. rlhe rim 1 of the wheel, which is shown to carryl a solid tire2', encircles a concenvtrically arranged disk or outer member 3connected to the rim by spokes 4. Disk 3 has a central opening definedby the inner perimeter of the disk, saidperimeterbeing sinuous, so as toform a plurality of in.

Wardly extending rounded projections 5 and a plurality of interveningrounded depressions 53.

Into the opening of disk 3*,there extendsv an inner member 6 which isapertured centrally and constitutes the hub fitted on the axle 7. Theouter perimeter ofmeniber 6 Specification of Letters Patent.

PatentedFeb. 6, 1917.

"-v-c'brresponds in `shape substantially to that MAYoLINo, a4k

of the inner perimeter of disk 3, it being likewise-of sinuousform,'there 4being thus formed on member 6, a number of outwardlyextending rounded projections 8 and a plurality of intervening roundedAdepressions. The correlation and relative size of the parts is such,that when the perimeter of member 6 is in ,parallelism with that ofmember 3, (which is the normal position),

there will be formed between the members,

y5 (Figs. 2 and 6). In order to produce the last named result, thelength of each pro. jection 8 (measuring from the t nter of the wheel tothe tip of the project. m) is considerably less, than the maximu: idepth of each depression 5 (measuring kirc n the -center of the wheeltothe-center of tA e depres-A sion). From this point of maxim. m. depth,the inner perimeter of disk 3, grat' lally approaches the center' of.the wheel, to form the 4projections 5, the shape ofthe perimeter beingsuchv that. the distance from the center of the wheelto the sloping sidewalls of said projections, is less than the length of projections 8Within the vclearance.` formed between members 3 and 6 there isaccommodated, an inflation tube 9, which maybe charged by means -of anipple 10 that proljects outwardly from disk 3, between a pair of spokes4.

Hub 6 is carried by the plate 11 of a pair of face plates'or members 11and 12, that extend vover opposite sides of disk 3, andare connected toeachother by bolts 13, passing -95' A through apertures 14 of the huband-furnished with nuts 15. In this Way, the 'face plates though rigidlyconnected to the inner section of the "wheel are normally in movablerelation to the outer, or rim-carrying section. During normal operation,

-the rotation of the hub will by the inflated' loo y be convenient forthe installation of a new tube.

' ,Though duringthe direct or deflated transmission described, themovement of the car will .suilice to center the hub within the rimsection, additional means are shown to be provided by which. .suchcentering becomes fixed. 'For' this purpose, there are tiltably mountedwithin cavities of disk 3, a plurality of pawls 16 arranged in pairs andactuated by springs 17. These pawls ein.

tend through slots 18 of disk 3 and are adapted to engage segmentalracks 19, termed on the contiguous faces of plates 11, When the air tubeis inflated, the pawls are tree to move across the smooth spaces ofplates 11, 19. intermediate racks 19 .along the lines of the wheelradii, so that the pawls do not check the cushioning action of the tube.When the tube becomes deflated, the racks 19 will glide over the pawlsuntil the projections 8 of the hub section come into operativeengagement with the projections 5 of the rim section. While the car isin notion, the drive yon the hub section sufices to center the samewithin the rim section. When however, the car stops, the hub sectionwould drop owing to the weight of the car body. This dropping ishowever, prevented for the reason that the hub section cannot turnforward on account of the contacting projections 8, 5 and cannot turnbackward on account ci the engagement of the pawls with the racks 19,the teeth of which permit the parts to be properly tightened up withdiderent thicknesses of intervening' deflated air tube sections. As thehub section and wheel section, thus become locked against independentturning, they become likewise locked against eccentric dis placement orsagging. a relative turn of the hub section being required to center theprojections of the former within the depressions 4oi the latter.

lt will be seen that with the wheel constructed as described, theIinflation tube is placed entirelyout of harms way and is not liable tobe punctured by obstructions on the @epics er this pant may be obtinefor roadbed. At the saine time the desirable pneumatic cushioning of thewheel is retained, while furthermore, at a blow out the size of thewheel is not diminished, and travel may continue without interruption.

I claim:

1. A wheel comprising a hub section having a sinuous outer perimeter toform a plu rality of outwardly extending rounded vprejections andinterveningI rounded depressions, a rim section having a sinuous innerperimeter, to form a plurality of inwardly extending` roundedprojections having sloping; side walls and interveningrrounded'depressions, and an air tube between the hub section and the rimsection, .the hub-projections being shorter than the "depth of the rimdepressions and longer than the distance of the sloping side walls fromthe wheel cen-l ter, whereby the hub-projections are adapted tooperatively engage said sloping side walls at a driving),- angle upon adeflation of the air tube, said hub section being centered within therim section upon said deflation.

21. A vehicle wheel comprising a rim section having inwardly extendingprojections, a hub section having outwardly extending projections, anair tube between the rim section and hub section, and means ior lockingthe outwardly extending projections against said inwardly extendingprojections, upon a dflation of said tube.

3. A vehicle wlieei comprising a riin section having inwardly extendingprojections, a hub section having outwardly extending projectionsadapted to operatively engage said inwardly extending projections, anintervening air tube, a plurality of pa .ris on the rim section, amember carried by the hub section, and a plurality of segmental racks onsaid member which are adapted to be engaged by said pawls whereby thehub-projections are locked against the rim projections upon a deflationof the air tube.

d. A vehicle Wheel comprising a rim seetion, havinginwardly directedprojections, a hub section having' outwardly directed projectionsadapted to operatively engage the inwardly directed projections o therim section, a pneumatic tube interposed between said sections, a faceplate carried by the hub section, said face plate having' racks, andpawls carried by the rim section and adapted to vengage said rackswhereby the hubprojections 'are locked against the rim-pio LUISMAYOLINU.

ve cents each, by addressing the Commissioner of Entente,

Wennemars., D. e.

